CN103186149A - Heat regulation device and heat regulation method - Google Patents
Heat regulation device and heat regulation method Download PDFInfo
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- CN103186149A CN103186149A CN2011104523245A CN201110452324A CN103186149A CN 103186149 A CN103186149 A CN 103186149A CN 2011104523245 A CN2011104523245 A CN 2011104523245A CN 201110452324 A CN201110452324 A CN 201110452324A CN 103186149 A CN103186149 A CN 103186149A
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Abstract
The invention discloses a heat regulation device which comprises a bearing unit, an electric heating unit, a temperature detection unit and a control unit. The electric heating unit is used for heating the bearing unit, the temperature detection unit detects the temperature of the bearing unit and produces an actual temperature value, and the control unit produces a wave-band type heat regulation instrument according to the actual temperature value and a target temperature value. The wave-band type heat regulation instrument is composed of a plurality of energy generation sections and a plurality of energy removing sections, and the energy generation sections and the energy removing sections are arranged. The electric heating unit heats the bearing unit in the energy generation sections and stops heating the bearing unit in the energy removing sections to allow the bearing unit to achieve even temperature in the energy removing sections due to self heat conduction.
Description
Technical field
The present invention relates to a kind of heating arrangement, and refer to a kind of hot regulation device and method thereof that food is used of arranging especially.
Background technology
Along with development of science and technology, when the modern arranges food, based on safety and consideration easily, seldom directly use fire, but in generation, is with electric calorifie installation.Common electric calorifie installation comprises electrothermal tube and electric heating piece.The principle of electrothermal tube and electric heating piece provides a large-scale resistance, for electric current by the time generate heat; Thus, the control size of current helps to detect the safety feature of temperature again, just can realize stablizing, smokeless and safe heat source, for cooking food.
Yet electric calorifie installation still has the many problems that must consider in design.Particularly, when adopting electric heating piece, have at least two problems to need to handle: the first, heating surface (area) (HS is subject to both sizings of electric heating piece, lacks flexibility on dimensional configurations; The second, electric heating piece is because itself there is suitable volume to exist, and in order to overcome the thermal expansion coefficient difference from the body different parts, cost performance is relatively low.
Therefore, based on the consideration of cost and actual demand, adopt electrothermal tube at present more, realize electric calorifie installation; It not only has can look the demand bend alignment to cooperate the advantage of various sizes in the design, more because structure has suitable robustness merely and in the use.Particularly, electrothermal tube is directly will be the vessel straight line of adorning food to be heated to the temperature objectives value that sets; But such type of heating can cause the food inequality of being heated in fact, for example presents the strip superheat region corresponding with the electrothermal tube position or burns the zone at food.
Summary of the invention
Because above-mentioned prior art problems, a present invention wherein purpose is providing a kind of hot regulation device with exactlying, to the electric heating unit assistant with suitable hot regulatory mechanism, to overcome the be heated problem of inequality of above-mentioned load bearing unit.
According to an embodiment of the present invention, propose a kind of hot regulation device, comprise a load bearing unit, a wire electric heating unit, a temperature detecting unit, and a control module.Electric heating unit is in order to heat load bearing unit; Temperature detecting unit is in order to detecting the temperature of load bearing unit, and then produces a temperature actual value; Control module then is according to temperature actual value and a temperature objectives value, produces the hot regulation and control instruction of a wave band formula and gives electric heating unit.Wherein, the hot regulation and control instruction of wave band formula is interlocked by a plurality of activation period (Enable period) and a plurality of decapacitation period (Disable period) and is formed (Interlaced).Thus, electric heating unit heated load bearing unit, and in the decapacitation period, stops to heat load bearing unit in the activation period, and load bearing unit was able in the decapacitation period, because of even from body heat conduction Da Wendu.Thus, can overcome prior art problems.
In addition, in other embodiment of the present invention, hot regulation device can have multiple further design proposal in detail.Particularly, control module can adopt square wave, string ripple or triangular wave to realize the hot regulation and control instruction of wave band formula; Be made as example with numerically-controlled machine, control module can produce the hot regulation and control instruction of wave band formula with pulse wave width modulation mode (PWM), and then makes electric heating unit in the set time, provides more violent firepower to load bearing unit, to reach the effect that is rapidly heated; On the other hand, control module also can produce the hot regulation and control instruction of wave band formula with pulse wave frequency modulating mode (PFM), and then makes electric heating unit to elongation heat time heating time of load bearing unit, but temperature control precision rises.
More particularly, hot regulation device can also comprise comparison list, the table of comparisons can in build control module in; Can provide a plurality of default regulation and control instruction according to the difference of temperature actual value and temperature objectives value in the table of comparisons, allow the mode of control module to table look-up, select for use one or more default regulation and control instruction to realize the hot regulation and control instruction of wave band formula.For example, the table of comparisons can during away from the temperature objectives value, present default regulation and control instruction in the pulse wave width modulation mode in the temperature actual value in design, and during near the temperature objectives value, presents default regulation and control instruction in pulse wave frequency modulating mode in the temperature actual value.Thus, when load bearing unit temperature during far below target, can Fast Heating; And when load bearing unit temperature during near target, heating is begun to carry out more slowly and accurately control.
Wherein another purpose of the present invention is providing a kind of hot regulate and control method exactly, to overcome the problem of each local heating's inequality that type of heating can face.So the present invention proposes a kind of hot regulate and control method, it detects a temperature actual value of a load bearing unit; Comparison temperature actual value and a temperature objectives value produce a difference; According to difference load bearing unit is carried out the intermittence heating.
According to an embodiment of the present invention, propose a kind of hot regulate and control method, comprise the following steps: at first, detect a temperature actual value of a load bearing unit; Then, comparison temperature actual value and a temperature objectives value produce a difference; Next, according to difference, provide the hot regulation and control instruction of a wave band formula to heat load bearing unit to control an electric heating unit.Wherein, the hot regulation and control instruction of wave band formula is interlocked by a plurality of activation period and a plurality of decapacitation period and is formed.Thus, electric heating unit heats load bearing unit in the activation period; And in the decapacitation period, stop to heat load bearing unit, load bearing unit was able in the decapacitation period, because of even from body heat conduction Da Wendu.
In addition, in other embodiment of the present invention, the hot regulation and control instruction of wave band formula can be forms such as square wave, string ripple or triangular wave.Particularly, be made as example with numerically-controlled machine, the hot regulation and control instruction of wave band formula can be weaved into the pulse wave width modulation mode, and then makes electric heating unit in the set time, provides more violent firepower to load bearing unit, to reach the effect that is rapidly heated; On the other hand, the hot regulation and control instruction of wave band formula also can be weaved into pulse wave frequency modulating mode, and then makes electric heating unit to elongation heat time heating time of load bearing unit, but temperature control precision rises.
More particularly, hot regulate and control method can also comprise the design comparison list.The table of comparisons can be made up of with corresponding a plurality of default regulation and control instruction a plurality of temperature range values; Thus, comparison difference and the table of comparisons just can utilize above-mentioned a plurality of default regulation and control instruction to produce the hot regulation and control instruction of wave band formula according to the relation of difference and a plurality of temperature range values.Say that further hot regulate and control method can design as follows in the table of comparisons: when difference is big, present default regulation and control instruction in the pulse wave width modulation mode; And in difference hour, present default regulation and control instruction in pulse wave frequency modulating mode.Thus, when the load bearing unit temperature is far hanged down in target, can Fast Heating; And when load bearing unit temperature during near target, heating is begun to carry out more slowly and accurately control.
In sum, according to hot regulation device of the present invention and method thereof, can have one or more following advantage:
(1) temperature is controlled accurately, realized the effect of homogeneous heating.
(2) to adjusting heat time heating time, be evenly distributed on load bearing unit in the hope of temperature, in order to avoid food materials burn.
Description of drawings
Fig. 1 is the functional block diagram of the hot regulation device of an embodiment of the present invention.
Fig. 2 is the structural representation of the control module 140 of Fig. 1.
Fig. 3 is the oscillogram of the hot regulation and control instruction 142 of wave band formula of Fig. 2.
Fig. 4 is the flow chart of steps of the hot regulate and control method of an embodiment of the present invention.
[primary clustering symbol description]
100: hot regulation device
110: load bearing unit
120: the wire electric heating unit
121: heating mode
130: temperature detecting unit
131: the temperature actual value
140: control module
141: the temperature objectives value
142: the hot regulation and control instruction of wave band formula
143: the table of comparisons
200: hot regulate and control method
210～241: step
Embodiment
See also Fig. 1, it is the functional block diagram of the hot regulation device of an embodiment of the present invention.Among Fig. 1, hot regulation device 100 comprises load bearing unit 110, wire electric heating unit 120, temperature detecting unit 130, with control module 140.For instance, hot regulation device 100 can be a simple and easy electronic oven of nursing one's health cooking with steel bowl.The electric heating unit of present embodiment is with the wire heating unit, and for example the wire electric heating unit 120, is example.So-called wire electric heating unit 120, electrothermal tube for example can direct welding of aluminum dish, and the aluminium dish contacts with the steel bowl entity and highly hot conduction and form load bearing unit 110 again.Note that the mode of the heating of other various type of heating such as face or some heating, still do not break away from category of the present invention.
For instance, when temperature objectives value 141 be heated to 100 the degree, and temperature actual value 131 be 30 the degree, then both differences are 70; The ratio that can design total activation period and total decapacitation period this moment is 2, that is the decapacitation period that must produce total 20 seconds heat time heating times with the total stand-by time of cutting in 10 seconds in the unit interval in addition at interval.Otherwise if temperature actual value 131 is 60 degree, then both differences only are 40; The ratio that can design total activation period and total decapacitation period this moment is 1, that is the decapacitation period that must produce total 15 seconds heat time heating times with the total stand-by time of cutting in 15 seconds in the unit interval in addition at interval.
On the other hand, when the absolute difference of temperature actual value 131 and temperature objectives value 141 is very little, the design of the hot regulation and control instruction 142 of wave band formula also can import the idea of pulse wave frequency modulating mode, design just heating-stand-by time is more frequently switched, be worth 141 too many to avoid temperature actual value 131 in certain activation period, namely to be thus lifted to exceeding temperature objectives.This design concept partly, back extended meeting is put off until some time later bright.
For asking distribution, the use-pattern that the table of comparisons shown in Figure 2 143 further is described is as follows: see through the design of the table of comparisons 143, can change and change total heat time heating time along with the temperature actual value 131 of load bearing unit 110 and the difference of temperature objectives value 141, and for example following table one is a suitable example of the table of comparisons 143.
Table one
In the mechanism of tabling look-up shown in the table one, if temperature actual value 131 is 50 degree, and temperature objectives value 141 is 100 degree, both differ 50, so select for use the 3rd row to set: heat 7 seconds and standby 5 seconds, and set the activation period and the wide ratio of decapacitation period ripple of pulse wave width modulation.If temperature actual value 131 is 75 degree, temperature objectives value 141 is 100 degree, and both differ 25 degree, then use secondary series, namely heat 6 seconds, and the activation period and the wide ratio of decapacitation period ripple of pulse wave width modulation set in standby in 6 seconds.Easy speech, difference is more big, and total heat time heating time is more long, and total stand-by time is more short; Total heat time heating time and total stand-by time after cutting and being staggered, can be presented intermittent heating mode 121, see Fig. 1.
Certainly, the default regulation and control instruction of the interval corresponding difference of each different differences is not with T.T. length consistent being limited; For example following table two is another suitable example of the table of comparisons 143.
Table two
In the mechanism of tabling look-up shown in the table two, be to design when temperature gap is big, just connect the firepower that provides stronger and be rapidly heated to reach; And when temperature gap hour, just Bao Shou control heat time heating time, avoid overheated so that less firepower to be provided.Particularly, control module 140 whenever fixedly a period of time can select the default regulation and control instruction in the table of comparisons 143 again for use according to the temperature actual value 131 after upgrading, further upgrade the hot regulation and control instruction 142 of wave band formula.Can be Preset Time system aforementioned opportunity of refreshing the hot regulation and control instruction 142 of wave band formula, for example whenever fixes one minute, or adopt predetermined warning temperature system, for example works as temperature actual value 131 and reach 50% and 80% of temperature objectives value 141, namely starts the mechanism of adjustment.Thus, as shown in Table 2, when temperature gap more than 80 ℃ the time, just standby 3 seconds of every heating 10 seconds; And when temperature gap during less than 10 ℃, every heating 1 second will standby 3 seconds, and load bearing unit 110 is able to because of even from body heat conduction Da Wendu.In addition, when both differences near the time, also sample time of temperature actual value 131 can be shortened, when finding temperature actual value 131 greater than temperature objectives value 141 values, namely interrupt heating schedule at once.In other words, when temperature actual value 131 is worth near temperature objectives value 141, can begin to import the mechanism of pulse wave frequency modulating, heating is begun to carry out more slowly and accurately control.
Certainly, above-mentioned heating mode is to be the accurate temperature control of refinement, and for instance, if temperature actual value 131 is 100 degree at present, and temperature objectives value 141 is 105 degree, and then former should every heating 3 seconds be standby 1 second; But temperature actual value 131 has just arrived 105 degree in the 2nd second, thereby starts interrupt mechanism, directly enters standby mode, and is stable with holding temperature.But in actual demand, the user is overcritical temperature control perhaps, and for example big fire is fried soon, can design a kind of heating mode this moment in addition for directly executing heat time heating time, no matter and whether it reaches or just over order temperature objectives value 141.Above-mentioned two kinds of patterns are to consider user's actual demand, and present the effect of firepower difference.
Please refer to Fig. 3, Fig. 3 is the oscillogram of the hot regulation and control instruction 142 of wave band formula of Fig. 2.Among Fig. 3, suppose that temperature objectives value 141 is 100 ℃, temperature actual value 131 is 25 ℃, can learn that temperature gap is 75 ℃, and then the hot regulation and control instruction 142 of wave band formula is to select for use the defined default regulation and control instruction in 70-79 ℃ of interval in the table two to weave into.After through a set time, the new temperature actual value 131 that control module 140 is obtained according to temperature detecting unit 130 for example is 45 ℃, and learns that up-to-date temperature gap is 55 ℃; At this moment, control module 140 is just multiple weaves into the hot regulation and control instruction 142 of new wave band formula with the interval 50-55 ℃ of corresponding default regulation and control instruction of temperature gap.It should be noted that, when temperature actual value 131 is worth 141 greater than temperature objectives, (a) point as shown in Figure 3, control module 140 can send the order of forcing to stop heating mode, drop to again up to temperature actual value 131 and to be lower than temperature objectives value 141, shown in (b) point, the side starts heating mode once again.It should be noted that control module 140 can stop heating mode or finish set heating mode at (c) point, to present aforementioned different firepower effect immediately according to different imposing a condition.
At last, the present invention more proposes a kind of hot regulate and control method, and it detects a temperature actual value of a load bearing unit; Comparison temperature actual value and a temperature objectives value produce a difference; According to difference load bearing unit is carried out the intermittence heating.For asking the heating mode of more clearly representing uniqueness of the present invention, please refer to Fig. 4, Fig. 4 is the flow chart of steps of the hot regulate and control method of an embodiment of the present invention.Among Fig. 4, hot regulate and control method 200 comprises the following steps: at first, shown in step 210, detects the temperature actual value of a load bearing unit, comparison temperature actual value and a temperature objectives value.Then, shown in step 220, when the temperature actual value is not less than the temperature objectives value, get back to step 210, to receive the effect that continues monitoring.Otherwise, if the temperature actual value less than the temperature objectives value, then enters step 230.In step 230, the hot regulation and control instruction of wave band formula is produced by the difference according to temperature actual value and temperature objectives value.Wherein, the producing method of the hot regulation and control instruction of wave band formula at least shown in step 231, is interlocked by a plurality of activation period and a plurality of decapacitation period and to be formed.Certainly, in step 230, the producing method of the hot regulation and control instruction of wave band formula can also arrive shown in the corresponding embodiment of Fig. 3 as Fig. 1, adopts formula operation or lookup table mode and realizes.At last, shown in step 240, the hot regulation and control instruction of wave band formula can heat load bearing unit in order to control a wire electric heating unit.The electric heating unit of present embodiment is with the wire heating unit, for example the wire electric heating unit.Certainly, in step 240, based on the heating mode of the hot regulation and control instruction of wave band formula, shown in step 241, be to make the wire electric heating unit in the activation period at least, the heating load bearing unit; And in the decapacitation period, stop to heat load bearing unit, load bearing unit was able in the decapacitation period, because of even from body heat conduction Da Wendu.In addition, in step 240, the heating mode of the hot regulation and control instruction of wave band formula more can be as Fig. 1 to shown in the corresponding embodiment of Fig. 3, correspondingly is provided with multiple heating mode.
The above only is illustrative, but not is restricted person.Anyly do not break away from spirit of the present invention and category, and to its equivalent modifications of carrying out or change, all should be included in the claim of the present invention.
Claims (11)
1. hot regulation device is characterized in that it comprises:
One load bearing unit;
One electric heating unit is in order to heat this load bearing unit;
One temperature detecting unit in order to detecting the temperature of this load bearing unit, and then produces a temperature actual value; And
One control module is according to this temperature actual value and a temperature objectives value, produces the hot regulation and control instruction of a wave band formula and gives this electric heating unit;
Wherein, the hot regulation and control instruction of this wave band formula is interlocked by a plurality of activation period and a plurality of decapacitation period and is formed;
Wherein, this electric heating unit heats this load bearing unit in these activation periods, and in these decapacitation periods, stops to heat this load bearing unit, makes this load bearing unit be able to this in a little decapacitation periods, because of even from body heat conduction Da Wendu.
2. hot regulation device as claimed in claim 1 is characterized in that, this control module is to produce the hot regulation and control instruction of this wave band formula in the pulse wave width modulation mode.
3. hot regulation device as claimed in claim 1 is characterized in that, this control module is to produce the hot regulation and control instruction of this wave band formula in pulse wave frequency modulating mode.
4. hot regulation device as claimed in claim 1, it is characterized in that, also comprise comparison list, this table of comparisons is the difference according to this temperature actual value and this temperature objectives value, a plurality of default regulation and control instruction are provided, select for use for this control module to be the hot regulation and control instruction of this wave band formula.
5. hot regulation device as claimed in claim 4, it is characterized in that, this table of comparisons is in this temperature actual value during away from this temperature objectives value, present this default regulation and control instruction in the pulse wave width modulation mode, and during near this temperature objectives value, present this default regulation and control instruction in pulse wave frequency modulating mode in this temperature actual value.
6. a hot regulate and control method is characterized in that, comprises the following steps:
Detect a temperature actual value of a load bearing unit;
Compare this temperature actual value and a temperature objectives value, produce a difference; And according to this difference, provide the hot regulation and control instruction of a wave band formula to heat this load bearing unit to control an electric heating unit;
Wherein, the hot regulation and control instruction of this wave band formula is interlocked by a plurality of activation period and a plurality of decapacitation period and is formed;
Wherein, this electric heating unit heats this load bearing unit in these activation periods, and in these decapacitation periods, stops to heat this load bearing unit, and this load bearing unit was able in these decapacitation periods, because of even from body heat conduction Da Wendu.
7. hot regulate and control method as claimed in claim 6 is characterized in that, the hot regulation and control instruction of this wave band formula is to weave in the pulse wave width modulation mode.
8. hot regulate and control method as claimed in claim 6 is characterized in that, the hot regulation and control instruction of this wave band formula is to weave in pulse wave frequency modulating mode.
9. hot regulate and control method as claimed in claim 6, it is characterized in that, also comprise this difference of comparison and comparison list, this table of comparisons is made up of with corresponding a plurality of default regulation and control instruction a plurality of temperature range values, with the relation according to this difference and these temperature range values, utilize these default regulation and control instruction to produce the hot regulation and control instruction of this wave band formula.
10. hot regulate and control method as claimed in claim 9 is characterized in that, this table of comparisons is when this difference is big, presents this default regulation and control instruction in the pulse wave width modulation mode, and in this difference hour, presents this default regulation and control instruction in pulse wave frequency modulating mode.
11. a hot regulate and control method is characterized in that, comprises the following steps:
Detect a temperature actual value of a load bearing unit;
Compare this temperature actual value and a temperature objectives value, produce a difference; And
According to this difference this load bearing unit is carried out the intermittence heating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104523245A CN103186149A (en) | 2011-12-29 | 2011-12-29 | Heat regulation device and heat regulation method |
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|---|---|---|---|
| CN2011104523245A CN103186149A (en) | 2011-12-29 | 2011-12-29 | Heat regulation device and heat regulation method |
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| CN103186149A true CN103186149A (en) | 2013-07-03 |
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| CN2011104523245A Pending CN103186149A (en) | 2011-12-29 | 2011-12-29 | Heat regulation device and heat regulation method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104635678A (en) * | 2014-12-17 | 2015-05-20 | 佛山市汉隆自动化技术有限公司 | Multi-path electric heating PWM (Pulse Width Modulation) control system |
| CN106332339A (en) * | 2015-07-03 | 2017-01-11 | 财团法人精密机械研究发展中心 | Induction heating device and control method thereof |
| TWI681278B (en) * | 2019-04-11 | 2020-01-01 | 群聯電子股份有限公司 | Temperature control circuit, memory storage device and temperature control method |
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| CN201782594U (en) * | 2010-08-06 | 2011-04-06 | 九阳股份有限公司 | Media-heating soybean milk maker |
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| US4604517A (en) * | 1983-08-08 | 1986-08-05 | Westinghouse Electric Corp. | Pulse frequency modulation control for a heater |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104635678A (en) * | 2014-12-17 | 2015-05-20 | 佛山市汉隆自动化技术有限公司 | Multi-path electric heating PWM (Pulse Width Modulation) control system |
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| TWI681278B (en) * | 2019-04-11 | 2020-01-01 | 群聯電子股份有限公司 | Temperature control circuit, memory storage device and temperature control method |
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Application publication date: 20130703 |